Update develop-ref after #1955 and #1956

[JohnHalleyGotway]

Pull Request Testing

This updates develop-ref to get past changes flagged in NB20211103.

• Describe testing already performed for these changes:
  
  The differences are caused by caused by 2 PR's for 2 issues:

1. PR Feature 1905 ens_ctrl #1955 for Issue Add logic to Ensemble-Stat to handle an ensemble control member. #1905 adds new output from ensemble_stat:

    ensemble_stat/ensemble_stat_MASK_SID_CTRL_20120410_120000V_ens.nc 
    ensemble_stat/ensemble_stat_MASK_SID_CTRL_20120410_120000V_orank.txt 
    ensemble_stat/ensemble_stat_MASK_SID_CTRL_20120410_120000V.stat 

It also adds new STDEV output variables to some existing ensemble_stat NetCDF output files:

file2: MET-develop/test_output/ensemble_stat/ensemble_stat_MASK_SID_20120410_120000V_ens.nc
ERROR: NetCDF headers differ:
25a26,37
> 	float APCP_24_A24_ENS_STDEV(lat, lon) ;
file2: MET-develop/test_output/ensemble_stat/ensemble_stat_MASK_SID_CENSOR_20120410_120000V_ens.nc
ERROR: NetCDF headers differ:
25a26,37
> 	float APCP_24_A24_ENS_STDEV(lat, lon) ;

2. PR Feature 1761 percent thresh #1956 for Issue Support percentile thresholds for frequency bias not equal to 1 (e.g. ==FBIAS0.9) #1761 adds 3 new grid_stat output files:

    perc_thresh/grid_stat_PERC_THRESH_FBIAS_240000L_20120410_000000V_ctc.txt 
    perc_thresh/grid_stat_PERC_THRESH_FBIAS_240000L_20120410_000000V_cts.txt 
    perc_thresh/grid_stat_PERC_THRESH_FBIAS_240000L_20120410_000000V.stat 

These changes are all expected.

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  
  None

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [Yes]

• Do these changes include sufficient testing updates? [Yes]

• Will this PR result in changes to the test suite? [Yes]
  
  If yes, describe the new output and/or changes to the existing output:
  
  Update reference version, as expected.

• Please complete this pull request review by [Fill in date].
  

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